Rihanna and Metallica will headline this year’s Global Citizens Festival in Central Park on Sept. 24, which will focus on education.

Kendrick Lamar, Selena Gomez and Major Lazer will also perform at the fifth annual concert sponsored by Global Citizen. The show is free, but attendees need to do acts of service outlined on the group’s website in order to get the required tickets.

“Over the last five years, Global Citizens around the world have taken more than 6 million actions in the fight against extreme poverty -- actions that are set to affect the lives of over 650 million of the world’s most marginalized people,” Hugh Evans, Global Citizen CEO, said in a statement. “This year’s festival -- and this incredible lineup -- is an annual touch point to hold our world leaders to account on their commitments to solve the world’s biggest problems.”

Selena Gomez said she was honored to be part of the festival because it helps solve important issues around the world. “I am particularly proud to be involved this year as the focus is on education,” she said in a statement. “As an artist with many young fans, I believe everyone has the right to an education.”